/Engine/Source/Runtime/Engine/Classes/Kismet/KismetTextLibrary.h
Converts a passed in integer to text based on formatting options
static [FText](API\Runtime\Core\Internationalization\FText) Conv_Int64ToText ( int64 Value, bool bAlwaysSign, bool bUseGrouping, int32 MinimumIntegralDigits, int32 MaximumIntegralDigits )